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2020, vol. 36, iss. 3, pp. 309-316
Effect of breed of performance tested boars on ejaculate traits
aUniversity of Belgrade, Faculty of Agriculture
bInstitute for Animal Husbandry, Belgrade-Zemun
cInstitute of Meat Hygiene and Technology, Belgrade

emailsavic@agrif.bg.ac.rs
Project:
Ministry of Education, Science and Technological Development, Republic of Serbia (Institution: University of Belgrade, Faculty of Agriculture) (MESTD - 451-03-68/2020-14/200116)
Ministry of Education, Science and Technological Development, Republic of Serbia (Institution: Institute for Animal Husbandry, Belgrade-Zemun) (MESTD - 451-03-68/2020-14/200022)
Ministry of Education, Science and Technological Development, Republic of Serbia (Institution: Institute of Meat Hygiene and Technology, Belgrade) (MESTD - 451-03-68/2020-14/200050)

Keywords: pig; boar; breed; performance test; ejaculate traits
Abstract
The main objective of the study was to determine the influence of breed on the traits of boar ejaculate: ejaculate volume (VOL, ml), sperm concentration (CON, x106 sperm/ml), total sperm count in ejaculate (TNS, x109 spermatozoa), sperm motility in native ejaculate (MON, %), sperm motility after dilution (MOD, %) and number of doses produced (NPD). The aim was also to evaluate the correlation of the boar performance test traits: average life daily gain (g), backfat thickness measured in two locations (mm), depth of longissimus dorsi muscle (mm) and carcass meat content (%) with ejaculate traits. Total of 931 ejaculates of 36 boars during reproductive exploitation were analysed (16 Landrace boars and 20 Large White boars). The effect was assessed using the procedure of the general linear model of the statistical package SAS 9.1.3 (SAS Inst. Inc., 2002-2003). The model for analysis included the influence of breed, season and the linear regression influence of body weight at the end of the performance test. The correlation of the traits was determined by applying the Pearson's correlation coefficient. Most of the examined ejaculate traits (VOL, CON, MOD and NPD) varied under the influence of boar breed (p<0.01; p<0.001). Weight at the end of the test (p<0.05; p<0.01; p<0.001) affected all examined traits, except CON and TNS. A weak association was found between production performance and ejaculate traits.
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article language: English
document type: Original Scientific Paper
DOI: 10.2298/BAH2003309S
published in SCIndeks: 09/10/2020
Creative Commons License 4.0